| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | bibliofilo | bibliofiloj |
| Accusative | bibliofilon | bibliofilojn |
| Dutch | bibliofiel |
|---|---|
| English | bibliophile |
| German | Bibliophile; Bücherliebhaber |
| Hungarian | bibliofil; könyvbarát |
| Italian | bibliofilo |
| Portuguese | bibliófilo |
| Spanish | bibliófilo |